[mcantelon]

I actually did read your post, thanks. Your post didn't seem to argue for a more complex model as much as attempt to make the case that if people weren't flying they'd be doing other equally destructive things.

>While this is correct from very simple standpoint, what are you really saying?

What I'm saying is quite simple. Carelessly wasting resources, as unnecessarily flying nonstop for a month does, wastes resources and we shouldn't condone it.

>that one person's weight is offset on the specific flight in question by cargo.

If someone doesn't fly and cargo is substituted for them, that amount of cargo doesn't need to be flown on a separate flight. The less flights the less fuel consumed and the less environmental damage, no?